Thermal behavior of Al/MoO3 xerogel nanocomposites

Han-Su Seo; Jae-Kyeong Kim; Jun-Woo Kim; Hyoun-Soo Kim; Kee-Kahb Koo

Journal of Industrial and Engineering Chemistry, Vol.20, No.1, 189-193, January, 2014

DOI10.1016/j.jiec.2013.04.008 Export Citation

Thermal behavior of Al/MoO3 xerogel nanocomposites

Han-Su Seo, Jae-Kyeong Kim, Jun-Woo Kim, Hyoun-Soo Kim¹, and Kee-Kahb Koo^†

Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 121-742, Republic of Korea
¹Agency for Defense Development, Daejeon 305-600, Republic of Korea

E-mail:

Sol-gel process using molybdenum alkoxides was employed to prepare Al/MoO3 xerogel nanocompo-sites as a thermite with better performance by improvement of interfacial contact area between the oxidizer and fuel. Micromorphology and thermite reaction characteristics of Al/MoO3 xerogel nanocomposites were analyzed by scanning electron microscopy (SEM) and thermogravimetry/differential scanning calorimetry (TG/DSC), respectively. In the present Al/MoO3 xerogel system, it was found that exothermic enthalpy increases as the Al/Mo mole ratio increases and then decreases when Al/Mo mole ratio is larger than 6 indicating that optimum mole ratio of Al/Mo is 6 with reaction enthalpy of 420.58 J/g.

Keywords:Thermite;Sol-gel;Nanocomposite

[References]

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Martirosyan KS, Wang L, Luss D, Nanotechnology., 2, 137 (2010)
Cheng JL, Hng HH, Ng HY, Soon PC, Lee YW, Journal of Physics and Chemistry of Solids., 71, 90 (2010)
Brito P, Duraes L, Campos J, Portugal A, Chem. Eng. Sci., 62(18-20), 5078 (2007)
Prentice D, Pantoya ML, Gash AE, Energy Fuels, 20(6), 2370 (2006)
Dutro GM, Yetter RA, Risha GA, Son SF, Proceedings of the Combustion Institute., 32, 1921 (2009)
Bockmon BS, Pantoya ML, Son SF, Asay BW, Mang JT, Journal of Applied Physics., 96, 064903 (2004)
Granier JJ, Pantoya ML, Combust. Flame, 138(4), 373 (2004)
Kim SH, Zachariah MR, Adv. Mater., 16(20), 1821 (2004)
Tillotson TM, Gash AE, Simpson RL, Hrubesh LW, Satcher JH, Poco JF, Journal of Non-Crystalline Solids., 285, 338 (2001)
Gash AE, Tillotson TM, Satcher JH, Poco JF, Hrubech LW, Simpson RL, Chemistry of Materials., 13, 999 (2001)
Shin MS, Kim JK, Kim JW, Moraes CAM, Kim HS, Koo KK, J. Ind. Eng. Chem., 18(5), 1768 (2012)
Wang LL, Munir ZA, Maximov YM, Journal of Materials Science., 28, 3693 (1993)
Umbrajkar SM, Schoenitz M, Dreizin EL, PROPELLANT-EXPLOS-PYROTECH, 31(5), 382 (2006)
Dong W, Dunn B, Journal of Non-Crystalline Solids., 225, 135 (1998)
Dong W, Dunn B, Journal of Materials Chemistry., 8, 665 (1998)
Brinker CJ, Sol.Gel Science: The Physics and Chemistry of Sol.Gel Processing, Academic Press, San Diego (1990)
Mendez-vivar J, Campero A, Livage J, Sanchez CJ, Journal of Non-Crystalline Solids., 121, 26 (1990)
Mendez vivar J, Inorganica Chimica Acta., 179, 77 (1991)
Yanoskaya MI, Obvintseva JE, Kessler VG, Galyamov B, Kucheiko S, Shifrina SI, Turova RR, Ya N, Journal of Non-Crystalline Solids., 124, 155 (1990)
Sequin L, Figlarz M, Cavagnat R, Lassegues JC, Spectrochimica Acta Part A., 51, 1323 (1995)
Mizuno N, Katamura K, Yoneda Y, Misono M, Journal of Catalysis., 83, 384 (1983)

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[3] Cheng JL, Hng HH, Ng HY, Soon PC, Lee YW, Journal of Physics and Chemistry of Solids., 71, 90 (2010)

[4] Brito P, Duraes L, Campos J, Portugal A, Chem. Eng. Sci., 62(18-20), 5078 (2007)

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[6] Dutro GM, Yetter RA, Risha GA, Son SF, Proceedings of the Combustion Institute., 32, 1921 (2009)

[7] Bockmon BS, Pantoya ML, Son SF, Asay BW, Mang JT, Journal of Applied Physics., 96, 064903 (2004)

[8] Granier JJ, Pantoya ML, Combust. Flame, 138(4), 373 (2004)

[9] Kim SH, Zachariah MR, Adv. Mater., 16(20), 1821 (2004)

[10] Tillotson TM, Gash AE, Simpson RL, Hrubesh LW, Satcher JH, Poco JF, Journal of Non-Crystalline Solids., 285, 338 (2001)

[11] Gash AE, Tillotson TM, Satcher JH, Poco JF, Hrubech LW, Simpson RL, Chemistry of Materials., 13, 999 (2001)

[12] Shin MS, Kim JK, Kim JW, Moraes CAM, Kim HS, Koo KK, J. Ind. Eng. Chem., 18(5), 1768 (2012)

[13] Wang LL, Munir ZA, Maximov YM, Journal of Materials Science., 28, 3693 (1993)

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[15] Dong W, Dunn B, Journal of Non-Crystalline Solids., 225, 135 (1998)

[16] Dong W, Dunn B, Journal of Materials Chemistry., 8, 665 (1998)

[17] Brinker CJ, Sol.Gel Science: The Physics and Chemistry of Sol.Gel Processing, Academic Press, San Diego (1990)

[18] Mendez-vivar J, Campero A, Livage J, Sanchez CJ, Journal of Non-Crystalline Solids., 121, 26 (1990)

[19] Mendez vivar J, Inorganica Chimica Acta., 179, 77 (1991)

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